Castrol GTX helps extend engine life by tackling the main causes of sludge.
It’s advanced 3X-Protect formula surrounds and suspends dirt particles to keep engines cleaner for longer*.
Giving you and your vehicle more miles together.
Mineral
Castrol GTX 20W-50 is recommended for the engines of the following passenger cars and light commercial vehicles:
Castrol GTX 20W-50:
Synthetic Technology
Castrol GTX ULTRACLEAN 15W-40 is suitable for use in automotive petrol and diesel engines where the manufacturer recommends an ACEA A3/B3, API SN/CF or earlier specification 15W-40 lubricant.
Castrol GTX ULTRACLEAN:
Mineral
Suitable for cars and light commercial vehicles that specify API CH-4 or earlier. Not recommended for vehicles fitted with Diesel Particulate Filters or petrol engines with catalytic converters.
Castrol GTX DIESEL :